diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 7a5ea1b1..c7d3a648 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -7,7 +7,7 @@ version: 2
 build:
   os: ubuntu-24.04
   tools:
-    ruby: "3.3"
+    ruby: "3.4"
   jobs:
     install:
       - chmod +x "./scripts/readthedocs_build.sh"